[Leica] Leitz Multiple coating

[Bill Barton <wbill@bellatlantic.net>]

Hi all, I went back thru my lit. collection and found a very small hand out
from about 1971/72 from E.Leitz Inc. NJ. They came out with this when Pentax
was doing alot of advertising about the just introduced "Multi-Coating"

The folder was listed as "How to succeed in Photograpy Without Multiple
Coating"

"There's a current trend of thought and advertising that claims the multiple
coating of a camera lens is just about the best thing that's come down the
pike in recent times. Because Leitz technology takes a different approach to
the manufacture of precision lenses - one that does not require multiple
coating. We thought it would be helpful to discuss the two technologies as
Leitz sees them.

1.Increased image contrast and color saturation.
2.Increased light transmission, and along with that uniform color
transmission over the entire spectrum.
3.Minimizing or elimination of flare,"starlight" reflections, ghosts, and
UVa light problems.
4.Scratch resistance due to unique hardness of the coatings.

All of these features are necessary in a good camera lens. Leitz technology
starts earlier in the process by creating "zero-defect" lenses with inherent
properties that maximize light utilization rather than applying external
remedies after manufacture. In other words, the Leitz approach is to "design
out" the problem rather than correct it later. Multiple coating of lenses is
certainly well within the Leitz technology- as yet that haven't chosen to
build lenses that require this remedy.

Reference:
Prof. G. Franke: The Development of Modern Photographic Lenses.
Photo-Technik und Wirtschaft. Jahrgang 22 (1971), Heft 11."

Needless to say I think they got alot of flak about this handout and I do
not recall seeing anything else about it....

The little handout does not have a date on it or a code number....

wbill